of chicago



w. SHINN I I LOCK Jan. 20, 1931.

Original Filed M ay 6, 1929 m 1 mm Reissued Jan. 20, ilfifid UNITED STATES PATENT OFFICE.

WILLIAM C. SHINN, OF CHICAGO, ILLINOIS, ASSIGNOR T0 CHICAGO LOCK COMPANY, OF CHICAGO, ILLINOIS, A. CORPORATION OF ILLINOIS LOCK Original No. 1,761,092, dated June 3, 1930, Serial No. 360,891, filed May 6, 1929. Application for reissue filed October 29, 1930. Serial No. 492,003.

The invention relates to locks.

In equipping automobiles'with locks for the different elements which are to be lockcontrolled, such as the doors, the transmission, the ignition switch and the tire carrier, it is desirable to provide a set of locks, all of which are controlled by one key. A desideratum in installations of the aforementioned character is to provide casings which may be built in as permanent parts of the elements and to provide a construction which permits them to be built intothe elements at the place of manufacture. is preferable to build the casing for the transmission look into the transmission at the place of manufacture, so that the installation of the key-controlled plug may be made when the automobile has been assembled. By-rbuilding the casings into or as permanent parts of. the various elements placement of a set of locks having the same key combination is facilitated by roasonof the fact that thelocks may be installed after the automobile has been assembled.

One object of the invention is to provide an improved lock which permits the casing to be separately installed and the plug to be selected and readily inserted into the easing after the latter has been built into the element, and in which the plug is secured in the casing by a spring-pressed device at the inner end of the lock which is operable to release the plug by a tool insertable from the outer end of the lock.

Another object of the invention is to provide a lock which is generally of new and improved construction, may be manufactured at a comparatively low cost and is an improvement upon th'at'disclosed in an application filed by me November 22, 1928, Serial No. 321,076.

Other objects of the invention and the various advantages and characteristics of the present lock construction will be apparent from a' consideration of the following detailed description.

The invention consists in the several novel features hereinafter set forth and more particularly defined by claims at the conclusion hereof.

For example, it 7 In the drawing which accompanies and forms a part of this specification or disclosure and in which like numerals of reference denote corresponding parts throughout the several views:

Fi 1 is a vertical longitudinal section of a ock embodying the invention.

Fig. 2 is a front elevation, the key being shown in section.

Fi 3 is, a horizontal section, the plug being shown in elevation.

Fig. i is a section on line- 4.4 of Fig. 1. Fig. 5 is a section on line 5+5 of Fig. 3, the plug being shown in position to permit it to be released for removal from the easmg. I

Fig. 6 is a similar section showing the plug locked against rotation.

Fig. 7 is a longitudinal section of the plug andcasing showing the tool inserted through the plug and casing for releasing theplugretaining device.

The invention isexemplified in a lock which is of the type set forth in Patent No. 1,644,092 and comprises a centrally boredcasing 9 which is rigidly secured to or built as a part of an element 10, such as a wall or door, and a cylindrical plug 8, which is rotatable in the casing. The outer .end of the plug is flanged so as to provide an annular shoulder 12 which fits in a recess 11in the casing and against a corresponding shoulder 13 in the casing. A slot 14: for a key 15= is formed in the plug 8. A series of slidable plate tumblers 16 are providedwith slots through which the key'ma'y pass, and have their outer endsadapted to be aligned at the periphery of the plug when the correct key is inserted to permit the plug to be rotated by the key. The entire series of tumblers is slidably held in a frame 17 and is acted upon by a spring 18 to press thetumbler-s radially outward. For a more detailed description of the tumblers, frame and spring, and the operation of the tumblers, reference may be had to the aforesaid Patent No. 1,644,092. A stud 27 formed on the inner end of plug 8, is adapted to control the operation of a bolt or other locking element, as well understood in the art.

1 9, and a continuous annular groove reg istering with the groove 19, is formed in the outer periphery of the plug 8. A retaining device 21 is positioned in these grooves and is adapted to hold the plug against withdrawal from the casing. This holding device is preferably stamped of plate metal and is provided with inwardly curved arms 22 which are adapted to retain the holding device in connected relation to the plug, and to limit the outward radial movement of the device. The holding device is provided with an integral central stem 23 which extends into a radial recess 24 formed in the plug. A coil spring 25, seated in said recess, extends around said stem and bears against the holder to force its central portion outwardly,

- so that it will normally extend into the groove 19 in the casing and lap the shoulder .19 to secure the plug against outward withdrawal from the casing, and will thus serve to lock the plug in the casing while permitting the plug to be rotated by the key.

In assembling the lock, the holding device 21 can be manually pressed inwardly so it will be confined within groove 20 of the'plug. while'the latter is passed inwardly through the front end of the casing, and until said device passesin back of shoulder 19, whereupon the spring 25 will press the holding device outwardly to lock the plug against withdrawal from the casing. For the purpose of permitting the holding device 21 to be moved inwardly to release the plug from the casing for the substitution of a plug with one set of tumblers for another, a groove 30 extends longitudinally through shoulder 12 of the plug. \Vhcn groove 30 in the plug is in longitudinal alignment with one of the recesses 26 in the casing, a suitable tool or device. such as a wire 33. may be inserted from the front of the lock through said groove and said one recess. to engage the outer edge of the holding device 21 and force it inwardly against the force of sprint 25 and completely into the groove 20 in t e plug, so that the plug and parts carried thereby can be withdrawn 5 through the front of the casing. Groove 30 is preferably correlatively positioned with respect to the tumblers, so it will register with a recess 26 in the casing only when the tumblers have been withdrawn from recesses 26 by the key and the plug is rotated by the key from its locking position. As a result, the plug can be released for withdrawal from thecasing only when the correct key'has been inserted and the tumbler rotated in the casing to bring the groove 30 into longitudinal alignment with one of the recesses 26, to permit the insertion ofthe device 33.. At all other times said recesses will be out of registry so that the plug cannot be released for withdrawal. The inner end of device 33 is bevelled to force the holding device 21 inwardly when the deouter-end of the lock. This makes it pos-- sible to release the plug fromthe outer end of the lock in installations where the inner 'end of the lock is inaccessible.

The invention is not to be understood as restrietedto the details set forth, since these maybe modified within the scope of the appended claims, without departing from -the spirit and scope of the invention.

Haying thus described the invention, what I claim as new and desire to secure by Letters Patent, is:

1. In a lock, the combination of a casing adapted to be secured in an element, a plug rotatable in and insertable endwise into the casing, key-operable tumblers for locking the plug in the casing, said casing and plug hav-.

ing grooves adjacent their inner ends,"a holding device in the groove in the plug and adapted to extend into the groove in the cas 'ing to secure the plug against withdrawal from the casing, and means to permit a releasing device to pass through the front end of the lock to release the holding device.

2. In a lock, the combination of a casing adapted to be secured in an element, a plug rotatable in and insertable endwise into the casing, key operable tumblers for locking the plug in the casing, said casing and plug spring-pressed holding device in the groove in the plug and adaptedto extend into the gnoove in the casing to secure the plug against withdrawal from the casing, and means to permit a releasing device to be inserted through the frontend of the lock to release the plug in the casing, said casing and plug having grooves adjacent their inner ends, a holding device in the groove in'the plug and having grooves adjacent their Inner ends, a 1

' I mess plug in the casing, said casing and plug havreiease the retaining device on ing grooves adJacent their inner ends, a spring-pressed crescent-shaped holding plate in the groove in the plug and adapted to extend into the groove in thecasing to secure the plug against Withdrawal from the casing, and, means for permitting insertion of a releasing :{device through the front end of the lockto release the holding device.

5. In a lock, the combination of a casing adapted to be secured in an element, a plug rotatable in and'insertable endwise into the casing, the plug being provided with an annular shoulder and the casing with an annular recess for the shoulder at the front end, key-operable tumblers for locking the plug in the casing, and a holding device at the idner end of the plug for securing it against withdrawal from the casing, the shoulder and easing being provided with grooves adapted to be aligned for the insertion of a device to release the retaining device.

6. In a lock, the combination of a casing adapted to be secured in an element a plug rotatable in and insertable endvvise into the casing, the plug being provided with an annular shoulder and the casing with an annular recess for the shoulder at the front end, key-operable tumblers for locking the plug in the casing, and a spring-pressed holdingdevice at the inner end of the plug for securing it against Withdrawal irom the casing, the shoulder and easing being provided with longitudinal grooves adapted to be aligned for the insertion of a device to release the retaining device.

' 7. In a lock, the combination of a casing adapted to be secured in an element. a plug rotatable in and insertablo endrvise into the casing, the plug being provided "with an annular shoulder and the casing with an annular recess for the shoulder at the "front end, key/operable tumblers for locking the plug in the casing and a springpressodholding device at the inner end, of the plug for securing it against Withdrawal from the casing, the shoulder, and easing being provided n'ith longitudinal grooves adapted to be aligned for the insertion of a device to y when the tumblers are withdrawn by d .o plug is shifted into its och e melt, the co casing, and a spring-pressed crescent-shaped holding plate at the inner end of the plug for securing it against Withdrawal from the easing, the shoulder and casing being provided.

With grooves adapted ,to be aligned for the insertion of a tool to release the retaining device. v

9. Ina lock, the combination of a casing adapted to be secured in an element, a plug rotatable in and insertable endWise into the casing, key-operable tumblers for locking the plug in the casing, said plug having a groove adjacent its inner end, a holding device in the groove .and adapted to extend into engagement withthe casing to secure the plug against Withdrawal from the casing, and means to permit a releasing device to pass from the front end of the lock to the rear or innner end for the purpose of releasing the holdin device.

10. n a lock, the combination of a casing, a cylindrical plug insertable endwise into and rotatable in the casing and embodying a key slot at the front end thereof, key-operable tumblers mounted in and movable transversely of the plug and adapted to lock the plug against rotation inthe casing, a releasable element between the plug and the casing for securing the plug against Withdrawal from said casing, and means forming a passage independent of the key slot whereby a tool may be inserted through the front end of the lock to control the element so as to free the plug for Withdrawal from the casing.

11. In a lock, the combination of a casing, a cylindrical plug insertable endvvisc into cy ndrical ping insertahle endwise into and rote able in he casing and embodying key nt end thereof. lrey operable d in and movable transverse-- d adapted to'loclr the ping n the casing and a releas on the pit i .nd. rotatable in the casing and embodying a.

substantially flat front face and a key slot in said face, key-operable tumblers mounted in and movable transversely of the plug and adapted to lock the plug against rotation in the casing, and a releasable element between the plug and the casin for securing the plug against withdrawal from the casing, said plughaving a longitudinal passage therein, independent of and at one side of the key slot and extending through the front face, whereby a tool for controlling the removal of the plug from the casing may be inserted through the front of the plug. v

14. In a lock, the combination of a casing, a cylindrical plug insertable endwise into and rotatable in the, casing and embodying a key slot at the ,front end thereof, key-operable tumblers mounted in and movable transversely of the plug and adapted to lock the plug against rotation in the casing, a retractable holder-element between the plug and the casing for limiting movement of the plug in one (llI'GCtlOll withrespect to the easing, and means forming a longitudinal passage whereby a tool may be inserted between the plug an the casing to shift the element into its retracted positiouvso as to free the plug for movement in said one direction.-

15. In a lock, the combination of a casing,

'a cylindrical plug insertable endwise into and rotatable in the casing and embodying a substantially flat front face and a key slot in said face, key-operable tumblers mounted in and movable transversely of the plug and adapted to lock the plug against rotation in the casing and a retractable holder-clementbetwecn the plug and the casing for limiting movement of the plug in one direction with respect to said casing. said plug having a longitudinal passage therein, independent of and at one side of the key slot 17. In a lock,

trolling the removal of the plug from the casing.

the combination of a casing, a cylindrical plug insertable endwise into and rotatable in the casing and provided with an annular flange at the front end thereof and a key slot in its front face, key-operable tumblers mounted in and movable transversely of the plug and adapted to lockthe plug against rotation in the casing, and a retractable holder-element between the plug and the casing for limiting movement of the plug in one direction with respect to the easing, the flange of the plug having a groove therein through which a tool may beinserted to shift theelement into its retracted position so as to free the plug for movement in said one direction.

18.. In a lock, the combination of a casing having a bore extending longitudinally therethrough, a cylindrical plug insertable endwise into and rotatable in the bore of the easing and embodying a key slot at the front end thereof, key-operable tumblers mounted in and movable transversely of the plug and adapted to lock the plug against rotation in the casing, said casing having longitudinal grooves along the bore for receiving the ends at the rear end of the lock and extending between the plu" and casing for securing the plug'against W thdrawal from said casing. and means forming a passage whereby a tool for controlling the removal of the plug from end of the lock through one of the grooves for the purpose of controlling the element so as to free the plug for withdrawal from the casing. I I v Chicago, Illinois, October 25th. 1930.

WILLIAM C. SHINN.

and extending through the front face, whcreby a tool may be inserted to shift the holder element into its retracted position so as to free the plug for movement in .one direction.

16. In a lock, the combination of a casing.

a cylindrical plug insertable endwiseinto and rotatable in the casing and provided with an annular flange at the front end thereof and a key slot in its front face, key-operable tumblers mounted in. and movable trans versely of the plug and adapted to lock the plug against" rotation in the casing, and a releasable element between the plug and the casing for securing the plug against withdrawal. from said casing,:the flange of the plug having a. passage formed therein through which may be inserted a tool for con of. the tumblers when the plug is in its locked and unlocked positions, a releasable element the casing may be inserted from the front I 

